Issue 1/2014

Methods of Removing Volatile Organic Compounds from Waste Gasses

Abstract...

The author dedicates his article to the description of methods and technologies that are used most frequently for removal of organic compounds from waste gasses arising during the various industrial processes. There are described fundamentals of individual technologies and specifies areas of their typical use including advantages and disadvantages of individual technologies as well as possible difficulties during their operational application in certain events.

CIAHOTNÝ K.

2 - 7

Central Control Room for Systems of Various Suppliers – Design and Practical Experiences

Abstract...

The design of central control room (CCR ) is a complicated task because certain miscellaneous professions are joined together during its design. In particular, it is necessary to take into consideration questions pertaining to information technology (IT) and practical experiences concerning the building operation and solving the occurred
problems. The design of CCR cannot be regarded through the optics of the itemized budget without understanding the technical background of the said problematic. Authors tried to outline the main difficulty and often left aside and underestimated aspects of the CCR design. Conclusions, specified in the article are supported
with the long-term experiences of authors with the CCR design; certain parts of the CCR design are to be illustrated at real practical examples.

CHLUPÁČ M., VIDIM J.

8 - 11

Mathematical Model of Real Refrigerant Compressor

Abstract...

The author follows up the problem of parameters concerning the mathematical modeling as to the real refrigerant compressors both standard and the output control by means of the revolution change, in his article. The mathematical descriptions come out of characteristics of real compressors that are altogether specified with a tabular form. There are indicated different possibilities of mathematical formulation for characteristics dependent on fundamental arguments and subsequent calculations of parameters which do not include characteristics. The emphasized fact is that the change of revolutions at compressors with the output control does not lead
to the change of parameters and the energy effectiveness only, but to the change of the compressor working area, too. It must be taken into account in control systems of cooling circuits working with such compressors.

KLAZAR L.

12 - 19

Comparison of Heat Pump and Solar System for Water Heating

Abstract...

The author compares use of heat pump with solar systems serving for heating hot water for a block of flats in Prague, in his study. The meteorological data from the station Prague – Karlov and the program developed in the framework of a diploma work are taken for the comparison. The comparison is elaborated both from the energy point of view and economically from an orientation view.

SEDLÁŘ J.

20 - 24

Old Noise Load and Protection of Public Health against Noise

Abstract...

Authors are engaged in the institute of so called old noise load, in their article. It is the most problematic enactment of valid legal settlement adjusting noise in the neighborhood of roads.The sense of this conception and reasons for its institution in the legal regulations ensuring the protection of the public health against the noise are explained in detail. There are specified the most often occurring mistakes at the application of the old noise load tolerated mode. The second part includes the schema of the methodology at assessing the possibility of the old noise load mode application in the designing profession or in the framework of the State Health Inspection of the public health protection bodies.

HELLMUTH T., JIRÁSKA A.

26 - 28

Risks of Utilization of Remainders Arising from Coal Burning for Heat and Electric Energy Production

Abstract...

Power industry is one of the greatest producers of waste. The character of waste products from the power industry is quite different from waste arising from the other industrial sectors as concerns its composition, methods of removal and possibilities of use. There has been revealed within the solution of the project “The Resort
Research Program in the Force of the Ministry of Environment” ref. no. SP2f3/118/08, bearing the name “the research of real properties of waste considered as an acceptable source of non-standard raw-materials (particularly the secondary by-products from the energy generation) in sense of actual legal requirements for the
protection of health, environment and the evaluation of the acquired information for the determination of safety processes and requirements for their use”, that products used for the landscaping, in certain events do not fulfill requirements stipulated for the utilization of waste on the ground surface. It means that construction
products made from remainders after the coal burning, being sold as safe, can contaminate the environment more than waste used for the same purpose.